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In this Pre-lab you will design and conduct the following acid base titration:1) Hydrochloric acid, HCl (strong acid), with...
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In this Pre-lab you will design and conduct the following acid base titration:1) Hydrochloric acid, HCl (strong acid), with sodium hydroxide, NaOH (strong base)2) Hydrochloric acid, HCl (strong acid), with ammonia, NH3 (weak base)3) Acetic acid, HC2H3O2 (weak acid), with sodium hydroxide, NaOH (strong base)4) Acetic acid, HC2H3O2 (weak acid), with ammonia, NH3 (weak base)Students design their own experiments to complete the titration experiments. They a formal laboratory report addressing the following questions.In which trial(s) did Phenolphthalein change color at about the same time as the large increase in pH occurred at the equivalence point? In which trial(s) was there a significant difference in these two times? Suggest and test a more suitable indicator for the designed experiments. The stock room of the virtual lab features other indicators such as Bromocresol Green, Cresol Red, Methyl Orange and Methyl Red. By examining a titration curve, how can you decide which acid-base indicator to use to find the equivalence point?Of the four titration curves, which combination of strong or weak acids and bases had the longest vertical region of the equivalence point? The shortest? The acid-base reaction between HCl and NaOH produces a solution with a pH of 7 at the equivalence point (NaCl + H2O). Why does an acid-base indicator that changes color at pH 5 or 9 work just as well for this reaction as one that changes color at pH 7? In general, how does the shape of a curve with a weak specie (NH3 or HC2H3O2) differ from the shape of a curve with a strong specie (NaOH or HCl)? Write each of the equations for the acid/base titrations. Use a data acquisition program to record Vol NaOH vs. pH and plot the titration curves.Course: Second Year General Chemistry

The main objectives of this quantitative experiment are to (1) evaluate the rate constant kR and the reaction orders, (2)...
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The main objectives of this quantitative experiment are to (1) evaluate the rate constant kR and the reaction orders, (2) investigate the manner in which the reaction rate depends on temperature, and (3) evaluate the activation energy, Ea, of the reaction.Course: Seconf Year Freshman (General) Chemistry

The main objectives of this quantitative experiment are to (1) evaluate the rate constant kR and the reaction orders, (2)...
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The main objectives of this quantitative experiment are to (1) evaluate the rate constant kR and the reaction orders, (2) investigate the manner in which the reaction rate depends on temperature, and (3) evaluate the activation energy, Ea, of the reaction.Course: Seconf Year Freshman (General) Chemistry